package com.usian.media.service.impl;

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.usian.media.mapper.WmMaterialMapper;
import com.usian.media.mapper.WmNewsMapper;
import com.usian.media.mapper.WmNewsMaterialMapper;
import com.usian.media.service.WmNewsService;
import com.usian.media.service.WmUserService;
import com.usian.model.admin.dtos.NewsAuthDto;
import com.usian.model.common.dtos.PageResponseResult;
import com.usian.model.common.dtos.ResponseResult;
import com.usian.model.common.enums.AppHttpCodeEnum;
import com.usian.model.media.dtos.WmNewsDto;
import com.usian.model.media.dtos.WmNewsPageReqDto;
import com.usian.model.media.pojos.*;
import com.usian.utils.threadlocal.WmThreadLocalUtils;
import io.seata.spring.annotation.GlobalTransactional;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Service;

import java.util.*;
import java.util.stream.Collectors;

@Service
public class WmNewsServiceImpl extends ServiceImpl<WmNewsMapper, WmNews> implements WmNewsService {

    @Value("${fileServerUrl}")
    private String fileServerUrl;
    @Autowired
    private WmMaterialMapper wmMaterialMapper;
    @Autowired
    private WmNewsMaterialMapper wmNewsMaterialMapper;
    @Autowired
    private KafkaTemplate kafkaTemplate;
    @Autowired
    private WmUserService wmUserService;

    public static final Short COLLECT_MATERIAL = 1;//收藏
    public static final Short CANCEL_COLLECT_MATERIAL = 0;//收藏
    public static final String WM_NEWS_TYPE_IMAGE = "image";
    public static final Short WM_NEWS_NONE_IMAGE = 0;
    public static final Short WM_NEWS_SINGLE_IMAGE = 1;
    public static final Short WM_NEWS_MANY_IMAGE = 3;
    public static final Short WM_NEWS_TYPE_AUTO = -1;
    public static final Short WM_CONTENT_REFERENCE = 0;
    public static final Short WM_COVER_REFERENCE = 1;
    public static final short WM_NEWS_CONTENT_REFERENCE=1 ;//主图引用

    @Autowired
    private WmNewsMapper wmNewsMapper;


    @Override
    public ResponseResult findPage(WmNewsPageReqDto dto) {
        if (dto==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        dto.checkParam();
        LambdaQueryWrapper<WmNews> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        if (dto.getStatus()!=null){
            lambdaQueryWrapper.eq(WmNews::getStatus,dto.getStatus());
        }
        if (dto.getKeyword()!=null && dto.getKeyword()!=""){
            lambdaQueryWrapper.like(WmNews::getTitle,dto.getKeyword());
        }
        if (dto.getChannelId()!=null){
            lambdaQueryWrapper.eq(WmNews::getChannelId,dto.getChannelId());
        }
        if (dto.getBeginPubDate()!=null && dto.getEndPubDate()!=null){
            lambdaQueryWrapper.between(WmNews::getPublishTime,dto.getBeginPubDate(),dto.getEndPubDate());
        }
        WmUser user = WmThreadLocalUtils.getUser();
        if (user==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }
        lambdaQueryWrapper.eq(WmNews::getUserId,user.getId());

        lambdaQueryWrapper.orderByDesc(WmNews::getCreatedTime);

        Page page = new Page(dto.getPage(), dto.getSize());
        IPage result=page(page,lambdaQueryWrapper);

        ResponseResult responseResult=new PageResponseResult(dto.getPage(),dto.getSize(), (int) result.getTotal());
        responseResult.setData(result.getRecords());
        responseResult.setHost(fileServerUrl);

        return responseResult;
    }


    /**
     * 发布文章业务处理
     * @param dto
     * @param isSubmit 0.草稿 1.提交
     * @return
     */
    @Override
    public ResponseResult saveNews(WmNewsDto dto, Short isSubmit) {

        //1.校验参数
        if (dto == null || StringUtils.isBlank(dto.getContent())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        if (isSubmit == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //2.解析json -- 》wmnews 保存wmnews表
        WmNews wmNews = new WmNews();
        //2.1对象浅拷贝 从哪源头copy到哪里目标
        BeanUtils.copyProperties(dto,wmNews);
        //2.2封面是自动的，那就type赋值为null
        if (WM_NEWS_TYPE_AUTO.equals(dto.getType())){
            wmNews.setType(null);
        }
        //2.3处理解析封面图片
        if (dto.getImages()==null && dto.getImages().size()>0){
            String s = dto.getImages().toString().replace("[", "")
                    .replace("]", "").replace(fileServerUrl, "")
                    .replace(" ", "");
            wmNews.setImages(s);

        }
        //2.4 保存新闻表
        wmNews.setCreatedTime(new Date());
        WmUser user = WmThreadLocalUtils.getUser();
        if (user==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }
        wmNews.setUserId(user.getId());
        wmNews.setSubmitedTime(new Date());
        wmNews.setEnable((short) 1);
        if (wmNews.getId()==null){
            this.save(wmNews);
        }else {
            this.updateById(wmNews);
            //把素材与文章的关系表删除 先删后新增
            QueryWrapper<WmNewsMaterial> queryWrapper=new QueryWrapper<>();
            queryWrapper.lambda().eq(WmNewsMaterial::getNewsId,wmNews.getId());
            wmNewsMaterialMapper.delete(queryWrapper);
        }



        //3.素材表 替换 解析 保存素材表
        String content = dto.getContent();
        //3.1 json转换list集合
        List<Map> imageList= JSON.parseArray(content,Map.class);
        //3.2提取内容中图片
        List<String> ectractUrlInfo=this.ectractUrlInfo(imageList);

        //4.批量保存关系表
        if (isSubmit.equals(WmNews.Status.SUBMIT.getCode()) && ectractUrlInfo.size()>0){
            //调用保存文章和素材的关系表
            ResponseResult result = this.saveRelativeInfoForContent(ectractUrlInfo  , wmNews.getId());

        }
        //5:设置封面
        if (isSubmit.equals(WmNews.Status.SUBMIT.getCode())){
            ResponseResult result = this.saveRelativeInfoForCover(dto, ectractUrlInfo, wmNews);

        }

        //6:保存完文章想kafka 发送一个文章的id
        kafkaTemplate.send("wemediazidongshenhe",JSON.toJSONString(wmNews.getId()));

        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    //提取封面的图片且维护封面和素材之间的关系
    private ResponseResult saveRelativeInfoForCover(WmNewsDto dto,List<String> imageLIst,WmNews wmNews){
        //1:判断多图和一图 修改主表的字段
        List<String> imageListNew=dto.getImages();
        if (dto.getType().equals(WM_NEWS_TYPE_AUTO)){
            if (imageLIst.size()>0 && imageLIst.size()<=2){
                wmNews.setType(WM_NEWS_SINGLE_IMAGE);
                imageListNew=imageLIst.stream().limit(1).collect(Collectors.toList());
            }else if (imageLIst.size()>2){
                wmNews.setType(WM_NEWS_MANY_IMAGE);
                imageListNew=imageLIst.stream().limit(3).collect(Collectors.toList());
            }else {
                wmNews.setType(WM_NEWS_NONE_IMAGE);
            }
        }
        String imageStr=null;
        if (imageListNew.size()>0){
            imageStr=imageListNew.toString().replace("[", "")
                    .replace("]", "").replace(fileServerUrl, "")
                    .replace(" ", "");
            wmNews.setImages(imageStr);
        }
        this.updateById(wmNews);

        //2：需要维护封面图片和素材的关系
        List<String> imageListNew1=new ArrayList<>();
        for (String s:imageListNew){
            imageListNew1.add(s.replace(fileServerUrl, ""));
        }
        ResponseResult responseResult = this.saveRelativeInfoForContent(imageListNew1, wmNews.getId());
        return responseResult;
    }


    //保存素材关系表
    private ResponseResult saveRelativeInfoForContent(List<String> imageList,Integer wmNewsId){
        //1.判断提取出来的图片是否存在于素材库中
        LambdaQueryWrapper<WmMaterial> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.in(WmMaterial::getUrl,imageList);
        WmUser user = WmThreadLocalUtils.getUser();
        if (user==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }
        lambdaQueryWrapper.eq(WmMaterial::getUserId,user.getId());
        List<WmMaterial> wmMaterialList = wmMaterialMapper.selectList(lambdaQueryWrapper);
        //2.如果存在，二次过滤真实存在于素材库的图片提取，存新的集合
        List<String> wmMaterialListNew=new ArrayList<>();
        if (wmMaterialList.size()>0){
            //3：给每条数据构建一个模型 map集合 key==URL value=素材id
            Map<String, Integer> map = wmMaterialList.stream().collect(Collectors.toMap(WmMaterial::getUrl, WmMaterial::getId));
            //4：循环wmMaterialList 过滤摸鱼的
            for (String s:imageList){
                Integer wmId = map.get(s);
                if (wmId==null){
                    //这是个摸鱼 库中没有的
                    return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "应用图片失效");
                }else {
                    wmMaterialListNew.add(wmId.toString());
                }
            }
        }
        //5：保存中间表
        wmNewsMaterialMapper.saveRelationsByContent(wmMaterialListNew,wmNewsId,WM_NEWS_CONTENT_REFERENCE);
        return  ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    //自定义提取文章内容中的图片
    private List<String> ectractUrlInfo(List<Map> mapList){

        List<String> imageList=new ArrayList<>();
        for (Map map:mapList){
            if (map.get("type").equals(WM_NEWS_TYPE_IMAGE)){
               String imageUrl= (String) map.get("value");
               imageList.add(imageUrl.replace(fileServerUrl,""));
            }
        }
        return imageList;
    }

    @Override
    public ResponseResult findById(Integer id) {
        if (id==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "应用图片失效");
        }
        WmNews wmNews = this.getById(id);
        ResponseResult responseResult = ResponseResult.okResult(wmNews);
        responseResult.setHost(fileServerUrl);
        return responseResult;
    }

    @Override
    public ResponseResult deleteByNewId(Integer id) {
        if (id==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        WmNews wmNews = this.getById(id);
        if (wmNews==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        //文章状态 9 上架1 不能删
        if (wmNews.getStatus().equals(9) && wmNews.getEnable()==1){
            return ResponseResult.errorResult(AppHttpCodeEnum.NO_OPERATOR_AUTH);
        }

        //删除中间表
        wmNewsMaterialMapper.delete(Wrappers.<WmNewsMaterial>lambdaQuery().eq(WmNewsMaterial::getNewsId,id));
        //删除主表
        this.removeById(id);

        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    @Override
    public ResponseResult downOrUp(WmNewsDto dto) {
        if (dto==null || dto.getId()==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        WmNews wmNews = this.getById(dto.getId());
        if (wmNews==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        //校验只能是已发布的才能上下架
        if (wmNews.getStatus()!=9){
            return  ResponseResult.errorResult(AppHttpCodeEnum.NO_OPERATOR_AUTH);
        }
        if (dto.getEnable()!=null &&(dto.getEnable()==1||dto.getEnable()==0)){
            this.update(Wrappers.<WmNews>lambdaUpdate().set(WmNews::getEnable,dto.getEnable())
                    .eq(WmNews::getId,dto.getId()));
            //发kafka  通知文章服务上下级  生产者   文章微服务消费者
            Map<String,Object> map=new HashMap<>();
            map.put("enable",dto.getEnable());   //0：上架  1：下架
            map.put("articleId",wmNews.getArticleId());
            kafkaTemplate.send("newDownOrUp",JSON.toJSONString(map));
        }
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    @Override
    public ResponseResult UpdateNewStatus(WmNews wmNews) {
        if (wmNews==null && wmNews.getId()==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        boolean b=this.update(Wrappers.<WmNews>lambdaUpdate().set(WmNews::getStatus,wmNews.getStatus())
                .set(WmNews::getArticleId,wmNews.getArticleId())
                .set(WmNews::getReason,wmNews.getReason())
                .set(WmNews::getId,wmNews.getId()));
       //boolean b = this.updateById(wmNews);
        if (b){
            return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
        }else {
            return ResponseResult.errorResult(AppHttpCodeEnum.SERVER_ERROR);
        }
    }

    @Override
    public List<Integer> findNews() {
        //查询审核通过待发布状态 8 发布时间 < 当前时间
        List<WmNews> wmNewsList = wmNewsMapper.selectList(Wrappers.<WmNews>lambdaQuery().eq(WmNews::getStatus, 8)
                .lt(WmNews::getPublishTime, new Date()));
        List<Integer> list = wmNewsList.stream().map(WmNews::getId).collect(Collectors.toList());

        return list;
    }

    @Override
    public ResponseResult findList(NewsAuthDto dto) {

        //1.mybatis 原生写法分页查询文章状态为3的
        dto.checkParam();
        // （当前页-1）*每页条数
        dto.setPage((dto.getPage()-1)*dto.getSize());
        List<WmNewsVo> newsVoList = wmNewsMapper.findList(dto);
        int count = wmNewsMapper.findCount(dto);

        ResponseResult responseResult=new PageResponseResult(dto.getPage(),dto.getSize(),count);
        responseResult.setData(newsVoList);

        return responseResult;
    }

    @Override
    public WmNewsVo findNewsById(Integer id) {
        if (id==null){
            return null;
        }
        //查询wmnews

        WmNews wmNews = this.getById(id);
        WmUser wmUser=null;
        if (wmNews!=null && wmNews.getUserId()!=null){

            //查询userId 作者
            wmUser = wmUserService.getById(wmNews.getUserId());
        }
        WmNewsVo wmNewsVo=new WmNewsVo();
        BeanUtils.copyProperties(wmNews,wmNewsVo);
        wmNewsVo.setAuthorName(wmUser.getName());
        return wmNewsVo;
    }
}
